Excavator and loader.



H. F. DOLAN.

EXCAVATOR AND LOADER. APPLICATION HLED NOV. 11, 1914.

Patented July 24; 1917.

6 SHEETS-SHEET I Patented July 2 1, 1917.

6 SHEETSSHEET 2 H. F. DOLAN.

EXGAVATUR AND LUADER.

mmcmun FILED NOV. 11. 1914.

s SHEETS-SHEET a. *6

Patented July 24, 1917 H. F. DOLAN.

- 'EXGAVATOR AND LOADER. APPLICATION min nov. 17. p914 Pafinted July 4, 1917.

6 SHEETS-SHEET 4 Elwucm be a H. F. DOLAN.

EXCAYATOR AND LOADER. APPLICATION FILED NOV-17,1914.

Patented-July 24, 1917 6 SHEETS-SHEET 5 H. F; noun.

EXCAVATOR AND LDADER.

APPLICAHDN HLED NOV, 17. 1914.

mlita July 24, 1917 v Wm HUGH F. DOLAN, 0F POT'ISVILLE, PENNSYLVANIA.

EX CAVATOR AND LOADER Specification of Letters Patent.

Patented July 2&, 1917.

Application filedNovember 17, 1914. Serial No. 872.566.

. 1 Tooll whom it may concern:

Be it known that I, won F. DOLAN, a citizen of the United Sthtes of America, residing at .Pottsville, in the county of Schuylkill anal State of Pennsylvania, have invented certain new and useful Improvements in Excavators and Loaders, of which the following is a. specification.

The n-esent invention relates to excavators and loaders, and consists in the combinations and arrangements of elements hereinafter disclosed and set forth in the accompanying claims.

The invention has for its purpose to provide an excavator and -l' ailing machine which will bepositive and accurate in up oration, one which will readily respond through aconvenient system of control, and oi'rti wherein the construction will ahly nil-hstaild heavy and rough usage.

"i fprther purpose of the invention is to provide ali excavator serviceable with either A rl'erlric. l nlrauhc.- compressed air or steam ponlcrhnd capable ol retracting the shovel car yi'ng arm whereby to unload the shovel in lose. proximity to the position of working, and also to enable operating in otherwise restrict-ed limits.

With these and other objects in view, the invention consists in the arrangement and combination of parts hereinafter claimed and. while the invention is not restricted to thocsact details shown and described, still,

Q {or thcpurposn-of disclosure, reference is had to. the accompanying drawings, in

which like reference cl'iaractcrs designate. "the same parts in the several v1ews 'lho"ii-ivcn'tion-disclosed herein is propeslidlas an improvement over the excavatorfla'nd lomler shown inmy U. S. Patent No. 1,064,456 and dated June '10. 1.913.

Figl'irol is a side rlevational view of the machine ron'u ilcte.

Fig. 2 is asimilar view showing the shovel in position for dumping- 3 is a, side elevational view, partly in section, and. disclosing the excavator and loader per as. I Fig. 4 is a top-plan view of Fig. 2.

i Fi 5 is a frontelci'atioual view of the machine .with parts in secti n and parts omitted for jclearnrss.

Figs. 6 any 7 are transverse rrati nal q raclr 4. I

)earr gs 5 are located immediately surviews talren ou the lines 6-45 and 7-'( respectively of Fig. 4, and

Fig. 8 is a top plan view showing the platform supporting means. Referriug. to the construction in further detail the same consists of an ordinary flat,"

car A adapted to be secured tov the rails Bl in any appropriate manner for stabilizing the machine. At one end the car A has mounted thereon a platform 1 revoluble about the shaft 2 and having a plurality of tapered rollers 3 that travel on the annular A series of plain roller thrust roun ing the shaft 2. 'A yoke frame 6 is mounted centrallyzpf the platform 1 and has a pivotal bearing 7 with the fixed arm 8 on the carA.

A shaft 8 is mounted on theyoke framen 6 and has fulerumed thereon the shovel arni support or frame comprising two similar parts 9 forming opposed gnideways (see Fig. 5). The shovel arm' 10 is mounted to have lateral reciprocating movement within said frame, and to effect which said am carries a rank 1.- on its underside that meshes with the iinion 12 secured on the shaft 8.

'Ihc annular track 4 is constructed with hn upturned and annular flange 17 havin an internal rack 18 design-ed to be engaged l suitable means driven from the engine 15 .for rptal'iug'the platform together with the shovel arm as \vgill lie nnderstood- In the prvsoint instance a Dakc engine 18 mounted 0 the yoke frame 6 has a pinion 18 on its shaft 8",, moshing with the rack 18 to rotate the iplhtfrirm. It will be appreciated thatgrlectricj power may ,be used where advisable in liu d steam..

The vertical ,or lifting and lowering movements of theshovel carrying arm, are 95 effected by means of a cable 19 that connerts with the (rotor end of said arm through a yoke 20, and passes over a grooved pulley 31 to the winding drum' mounted on the car. The shovel 22 is fulcrumed at 23 to the head 24 which is secured on the outer end of the arm 10 that reci rocates through the yoke frame 6 as hereto. ore described. Said shovel has a hinged door 25 adapted tobe operated in any suitable manner, and the cutting 0632 of flu. shovel is projected forwardly. The piston in the cylinder 26 is under such control of the operator that the cuttin edge of the bucket may be presented to t e material to be loaded at the angle most advantageous for the work to be performed. By means of such control, this angle may be varied and fixed at any point within the travel of .the bucket on its fulcrum, and, may be changed and fixed at any point within the limit of its movement.

The shove] is adapted to be swung or tipped on its fulcrum 23 to receivq or release a load by means of motive owpr car ried on and movable with the 8 W1 sup portin arm 10. Said motive pow consists o a cylinder 26 and piston 27 o ra'ble therein and having its rod 28 con cting with the shovel through a link 29 gaging a cross-head 30 and an arm. 31 on said piston rod and shovel respectively. A ring 32 provides a reinforcement and ide for the piston rod 28 as shown in Fig. 3.

From the foregoing it will be readily seen that the shovel 22 may be driven into the em bankment or other material to be excavated under the maximum drivingpower of the 15 through pinions 16, 13 and. 14, and this application of power to said shovel carrying arm forces the teeth of the shovel into the material to be loaded and the tip in action imparts to it a circular motion w iic 1 may be coincident with hoisting it through the mate 0.1 by the cable 19 or independent of it. Th completion of, the tipping action places the ucket in position for cmptyin Ltress is lai upon the tipping motion whi e filling as essential-for the successful use of the machine. This feature of the machine accomplishesithe same result in a restricted location as that attained by the ordinary steam shovel .wherein the fillin is entirely due to the circular motion 0 the shovel against the terial being excavated through hoisting the eve] arm which is fulcrumed at one end. n the smal. space available'in a tunnel bee in the head-room for such action cannot ad while with the present apparatus, t e desired result is accomplished by use of tie inde endent cylinder 'whiph fuicrum's the shovel while it is being hoisted, or before that period, if the material is of a nature to allow it.

The degree of an 1e between the shovel carrying arm 10 an the hoisting cable 19 is, in the present disclosure, too small, but it show); and described are what are believed to be'' referable embodiments thereof, it is nevert iclcss to be understood that various lmay ile t e forms of the invention herein forms and modifications thereof may be had without departing from the spirit and scope of the invention as claimed.

What is claimed as new is:

1. In an excavator and leaderthe combination of a frame, a shaft joiirnaled on the frame, a single arm fulcrumed on and lying/in a plane above said shaft and shiftable thereon to position the machine with respect to the work, a shovel fulcrumed on the arm and having a cuttin edge projecting forwardly, means for shi ting said arm, means for swinging the arm comprising an upwardly and rearwardly disposed cable, and means carried by the armfor turning the shovel upwardly on its fulcrum, substantially as set forth.

2. In an excavator and loader, the combination of a frame, a shaft journ-aled on the frame, a pinion on said shaft, an arm having a rack fulcrumedon the pinion and shiftable thereon to position the machine with respect to the work, means for operating said inion to shift the arm, a shovel fulcrumcd on the arm and having acutting edge rojecting forwardly, means for swinging t e arm on the pinion comprisin an upwardly and rearward] disposed ca 1e, and

means carried wholly y the arm for turning the shovel upwardly on its fulcrum, substantially as set forth.

8. In an excavator and loader, the combination of frame, a shaft journaled on the frame, a infii on said shaft, in arm having a rack f cru ed on the pinion and shiftable thereon to position the machine with respect to the work, mea s for operating said pinion to shift the arm a shovel fulcrumed on the arm, an upwardly and rearwardly di osed cable for swinging the arm, a oy der mounted on the arm, a piston operable in the cylinder and a connection betwedu said piston and shovel turn the latter u wardly on its fulcrum, s antially as set orth.

-4. In an excavator and loader, the com' bination of, a horizontally rotatable frame, a shaft-journaledbn the frame, a air of arm supports having guide-ways fu crumed on g arm with said am supports on. said shaft comprising an upwardly and rearwardly glissaid shaft, a pinion mounted on the shaft between said am supports, a shovel carryin zrlmmounted within said 'de-ways an a shove fulcrumed on the arm means for operatingthe pinion to shift f'thearm on its fulcrum to position the machine with re spect to the work, means for sw the a rack engaging wit said pimon, a

posed oable, and means carried wholl by the arm for turningthe shovel u war y on its fulcrum, substantially as set orth.

In testimony whereof I aflix my signature in presence of two witnesses.

HUGHF. 130mm Witnesses:

F.- S. v RAYMOND LEDDY. 

